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<table width="100%" summary="page for cgd"><tr><td>cgd</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Chronic Granulotamous Disease data</h2>

<h3>Description</h3>

<p>Data are from a placebo controlled trial of gamma
interferon in chronic granulotomous disease (CGD).
Contains the data on time to serious infections observed through
end of study for each patient. 
</p>


<h3>Usage</h3>

<pre>cgd</pre>


<h3>Format</h3>


<dl>
<dt>id</dt><dd><p>subject identification number</p>
</dd>
<dt>center</dt><dd><p>enrolling center </p>
</dd>
<dt>random</dt><dd><p>date of randomization </p>
</dd>
<dt>treatment</dt><dd><p>placebo or gamma interferon </p>
</dd>
<dt>sex</dt><dd><p>sex</p>
</dd>
<dt>age</dt><dd><p>age in years, at study entry </p>
</dd>
<dt>height</dt><dd><p>height in cm at study entry</p>
</dd>
<dt>weight</dt><dd><p>weight in kg at study entry</p>
</dd>
<dt>inherit</dt><dd><p>pattern of inheritance </p>
</dd>
<dt>steroids</dt><dd><p>use of steroids at study entry,1=yes</p>
</dd>
<dt>propylac</dt><dd><p>use of prophylactic antibiotics at study entry</p>
</dd>
<dt>hos.cat</dt><dd><p>a categorization of the centers into 4 groups</p>
</dd>
<dt>tstart, tstop</dt><dd><p>start and end of each time interval </p>
</dd>
<dt>status</dt><dd><p>1=the interval ends with an infection </p>
</dd>
<dt>enum</dt><dd><p>observation number within subject</p>
</dd>
</dl>



<h3>Details</h3>

<p>The <code>cgd0</code> data set is in the form found in the references,
with one line per patient and no recoding of the variables.
The <code>cgd</code> data set (this one) has been cast into (start, stop]
format with one line per event, and covariates
such as center recoded as factors
to include meaningful labels. 
</p>


<h3>Source</h3>

<p>Fleming and Harrington, Counting Processes and Survival Analysis,
appendix D.2. 
</p>


<h3>See Also</h3>

<p><code>link{cgd0}</code></p>


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